Looking for rotational molding alternatives for North Dakota? Want affordable custom plastic molding that is cost effective for Minot Afb area? Then give us a call at our toll free number 866-971-7861 or request a quote today!

rotomolding-Minot Afb-Rotational molding pertains to a plastic manufacturing practice that creates hollow stress-free items. The procedure uses high temperatures and bi axial rotation to come up with seamless, one piece items that have varying forms, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing techniques in that no pressure is needed. It also has few contenders when it comes down to the creation of sizable hollow items which are long-lasting and inexpensive.There is a wide variety of product lines that are produced by this process including large size water tanks, automobile materials, intricate shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in regards to type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Minot Afb ND 58704, it is a cheaper way of making plastics. This is because apart from the fact that no pressure is required, the cost of mold preparation is low.
  • A wide array of design options.
    There is no limit to the kind of design one may want to create. The roto-molding process therefore allows for the manufacturing of products that have complex shapes for different purposes.
  • Size.
    The process provides room for the manufacturing of products of any size, large or small. As mentioned earlier, it has few competitors when it comes to the making of large tanks at low costs.
  • Low risk.
    Due to the low costs of creating a mould, the process allows for test runs before one can decide whether to do mass production. It therefore minimizes the risk of losing a lot of investment.
  • Durable products.
    The process allows for even coating of the mould with the heated polymer, giving the product a wall with uniform thickness. It also gives the option of double coating for increased durability. Sometimes metal inserts are placed inside the mould to further strengthen the product.
  • Environmentally friendly.
    There is no waste that could have a negative impact on the environment because the products that cannot be used are reground and reused as polymer.

Examples of Products Made by Rotational Molding

Plastic Products-Minot Afb-Rotocasting is a very versatile process, making it possible to create a variety of products for different industries.

  • Agricultural industry– From cattle feeders, water troughs, spray tanks etc.
  • Automotive industry– Filler tubes, dash boards, arm rests, sun visors, air conditioner duct work etc.
  • Furniture– We have plastic cabinets, chairs and tables made from this form of moulding.

There are numerous North Dakota plastic products also that have been made for the marine industry, lighting, waste storage and transportation, kayaks etc.

Few Disadvantages – There are nominal disadvantages that have been associated with rotocasting. For instance:

  • – The process is relatively slow when compared to injection moulding.
  • – There is a limitation when it comes to the type of raw material you can use. Only poly based and nylon polymers can be used.
  • – The process comes with an increased cost because the polymer has to be ground to powder form before use.
    These limitations are often overlooked considering that the process is still relatively cheap and offers more in terms of variety when it comes to the finished range of products.

Remember – There are new developments and discoveries that are being made as the world of plastic manufacturing in Minot Afb North Dakota continuously. For instance, tests are being done to see whether there are other materials that can be used for this process. But so far, rotomoulding offers a good option for the production of a wide range of inexpensive plastic products.

The Roto-Molding Method in Detail

This moulding process has been used since early times for creatingvseverl items. Egyptians as an example, employed rotational molding procedures in the creating of ceramics. The Swiss were also working with this rotation approach to generate hollow chocolate eggs. Some plastic items in the USA were manufactured using this procedure some time between 1940 and 1950. The system has however taken very long to catch on because it was considered as being a relatively slow process

1. Mold preparation.
A fixed quantity of polymer in grain form is loaded into a hollow mold. The mould is usually made from cast aluminium or sheet steel component. The colour chosen for the end item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic production.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then locked and positioned inside the oven.

2. The heating and fusion phase.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 spins per minute. The main thing that is critical at this moment is the period of time the mould will spend within the oven. If it overstays, the material will lose stability and durability, producing a faulty item. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the completed product.

3. Mold cooling.
When the component has completely spent the enough of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is one more procedure that relies a lot on the ideal timing, since quick cooling shrinks the material too quick, causing warping of the product.

4. The removing or de-molding step.
When the component inside te mould has cooled effectively, the molder managing the procedure can then take out the finalized product from the mold. The function is repeated from the beginning, making a number of exact items.

For more information on the different rotational rotomolding options offered for the Minot Afb ND 58704 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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